Author Topic: Under steer on the vr6...  (Read 5964 times)

Offline tshirt2k

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Re: Under steer on the vr6...
« Reply #20 on: 06 June 2012, 21:57 »
What size tyres do you have. Factory pressures for a 16v on 195/50 are 38 front 35 rear. VR6 should be the same as they are heavier up front compared to the smaller engines.


Mk3 ABF 16VT Megasquirt V3

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Offline Khare

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Re: Under steer on the vr6...
« Reply #21 on: 06 June 2012, 21:58 »
What size tyres do you have. Factory pressures for a 16v on 195/50 are 38 front 35 rear. VR6 should be the same as they are heavier up front compared to the smaller engines.


Are you sure? Fuel cap says 33/30.

Offline tweed

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Re: Under steer on the vr6...
« Reply #22 on: 06 June 2012, 22:36 »
What size tyres do you have. Factory pressures for a 16v on 195/50 are 38 front 35 rear. VR6 should be the same as they are heavier up front compared to the smaller engines.


Really???

Low pressure means soft side wall. That moves about and creates heat. Hot tyre = more grip.

And remember we are talking about "in the rain"   

Fcuk having 38 up front in the rain, would be in the first ditch you see.

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Offline thai-wronghorse

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Re: Under steer on the vr6...
« Reply #23 on: 06 June 2012, 23:01 »
Plus the fact it'd be skipping about over every particles of grit in the road due to been so firm and not allowing any bump absorption.

Offline GolfGL

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Re: Under steer on the vr6...
« Reply #24 on: 06 June 2012, 23:02 »
My old cars wheel spin and understeer was solved by getting rid of the crap pirellis and replaced by goodyear eagle f1 assymetrics. i did spend 500 on four 18s and definitely wont spend that on my golf but they were staggering in wet and dry. The car was well sorted with fresh buahes all round and a weitec ultra gt susp kit.
Adam
Audi TT 3.2 24v v6 2005 - The Sloth - Weekends
VW Golf 2.0 8v GTI 1996 - Lemonade II -Daily
MNR Vortx Yamaha R1 2009 - Track days
Sold Seat Leon Cupra R 225 -LM04 NDE "Lemonade"

Offline tshirt2k

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Re: Under steer on the vr6...
« Reply #25 on: 06 June 2012, 23:02 »
No matter how hot the tyre is, if the sidewall is on the tarmac beacuse the tyre is folding over itself, you wont be getting much grip.

Recommended tyre pressure are there for a reason. Vw wouldn't put them in the fuel flap for dry weather only.  :wink:

And they are cold pressures too. Meaning that the pressure will increase as the tyre heats.

Havent found a ditch yet on those pressures in the rain. Lower profile tyres need higher pressures too, due to the usually lower load rating and smaller sidewall.



Mk3 ABF 16VT Megasquirt V3

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Offline tshirt2k

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Re: Under steer on the vr6...
« Reply #26 on: 06 June 2012, 23:03 »
What size tyres do you have. Factory pressures for a 16v on 195/50 are 38 front 35 rear. VR6 should be the same as they are heavier up front compared to the smaller engines.


Are you sure? Fuel cap says 33/30.

I'm sure i'd take a pic but cars not here. 205's are around 32 front 30 rear.


Mk3 ABF 16VT Megasquirt V3

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Offline tshirt2k

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Re: Under steer on the vr6...
« Reply #27 on: 06 June 2012, 23:07 »
Found a page that someone posted that confirms it.

http://www.clubgti.com/showthread.php?70143-Tyre-pressures-for-GTi-16v-15inch-wheels&p=793702&viewfull=1#post793702


In old money means 38 front and 35 rear on a 195/50-15

Full load is 40 front 43 rear. And that from manufacturer data.
« Last Edit: 06 June 2012, 23:10 by tshirt2k »


Mk3 ABF 16VT Megasquirt V3

Tshirt knows........ How to diagnose